Car-heating apparatus



UNITED STATES PATENT O FICE.

JOHN B. PORTER, OF NEW YORK, Y., ASSIGNOR TO THE SEWVALL SAFETY HEATING COMPANY, OF PORTLAND, MAINE.

. CAR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 402,540, dated April 30, 1889.

Application filed April 21, 1888. $erial No. 271,420. (No model.)

[ all whom it may concern:

Be it known that I, JOHN B. PORTER, of New York, county and State of New York,

have invented an Improvement in Gar-Heating Apparatus, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

- This invention has for its object to im- IO prove the construction of car-heating apparatus, and the invention is especially applicable to aboiler or heater adapted to be used in connection with another or auxiliary heater such, for instance, as the Baker heater.

1 5 In other applications filed by me, Serial Nos.

271,418 and 271,419, boilers or heaters of different constructions to be used in connection with other heaters are shown, and the boiler. or heater herein to be described is designed to be used in substantially the same manner.

In accordance with this invention a heat ing-coil placed in a suitable heating-chamber and forming What is now commonly known as a Baker heater is employed as the aux- 2 5 iliary heater, the said coil being in operative contact with the system of warming or .circulatin g pipes. Another heater, which forms the essential feature of this invention, is placed adjacent to the aforesaid heater, it

0 consisting of awater-chamber surrounded by or inclosed by a steam-chamber. Steam is admitted to the steam-chamber from the main steam-pipe to thereby heat the water contained in the waterchamber. Within the water chamber a supplementary heatingchamber is formed, which will be heated by a flame-such, 'forinstance, as a gas-jet, or it may be a hydrocarbon burnen.

The invention therefore consists in details 40 of construction to be hereinafter pointed out.

The drawing shows, in vertical sectionand partial elevation, car-heating apparatus embodying this invention.

The coil a is placed in the heater A, the upper end of said coil being connected by a pipe, a, with a water-reservoir or expansionchamber, a. A pipe, a leads from the res ervoir a and connects with a system of warming or heating pipes, b. The lower end of the coil a is also connected, as by the pipe 0, with the system of warming or circulating pipes. A cock, 0', is placed between the coil a and the pipe 0.

Another heater is employed which comprises the end piece or base (1, provided with an internal groove or passage, 2, and with internal screw threads, 3, external screw' threads, 4, and the flange 5, and the head or end piece d, having the internal groove or passage, 6, and internal screw-threads, 7 and 8. A tube, 6, receives or engages the flange 5 of the base (I at one end and the screw-threaded portion 7 of the head d at the other end. Another tube, e, is arranged concentric to the tube 6, it receiving or engaging the screwthreaded portion 3 of the base 01 at one end "and the screw-threaded portion 8 of the head 61' at the opposite end. Another tube, as 6 is also arranged concentric to the tubes 6 and c, it engaging the screw-threaded portion 4 of the base cl at one end and engaging a diaphragm, f, which is attached to the head d,

at the opposite end, said diaphragm f being held in place by a nut, f.

By the employment of the tubes e 6 6 as herein shown and described, three chambers are formed, one, as i, which is an annular chamber and has leading into it a pipe, 1'', which is connected directly with the main steam-pipe B, extending beneath the car, a suitable cock, B, being placed in said pipe to control the passage of steam therethrough. Another pipe, 11 leads from the lower end of said annular chamber i, by which the water of condensation is removed, a suitable cook,

i being placed in said escape-pipe. A watergage, i is also attached to said annular chamber at its lower end to determine the quantity of condensation contained in the chamber d. The second chamber, n, formed 0 by or between the tubes 6 and e, is a waterchamber, and opens at each end, respectively, into the annular grooves orpassages 2 and 6 in the end pieces, 01 d. A pipe, n leads into the annular groove or passage 6, itbeing- 5 connected with the pipe a,which leads to the reservoir of, and another pipe, n leads from the annular groove or passage 2 to the pipe 0, connecting with the Warming or circulation pipes,

It will be observed that when the three-Way cock 6 of the main steam-pipe B is open and the cock 0' closed the steam passes upward into the chamber '1', completely filling the said chamber and j acketing the Water-chamber '21, thereby heating the Water contained in said chamber, which starts and thereafter continues to circulate freely through the system of warming or circulating pipes.

If it is desired, a fire may be kindled in the heater A, and thereby employ the coil to as a heating-coil.

The inner chamber, m, or that one formed within the tube e, is also employed as a heat ing-chamber, it being open at the top for the products of combustion or to maintain combustion and supplied at the bottom with a gas-burner or hydrocarbon burner, as desired, or other heating apparatus.

A supplemental Water-coil, 0, may be contained in the heating-chamber, m, the ends of said coil being connected directly or indirectly with the pipe 0.

WVhen the heating-chamber m is utilized, the water contained in the chamber 21 will be heated, and also the water contained in the coil 0.

By the construction herein shown a very large surface of Water is exposed to the action of the chambers 17 or m. The several i11- dependent means of heating the Water contained in the Warming-pipes may be used independently or con unctively, as desired.

It may be desired to omit the auxiliary heater A and its coil a and to use the main heater herein shown alone, it being heated by a flame or by steam, as desired.

I claim-- 1'. In a ear-heating apparatus, the main steam-pipe and the pipe 2" leading therefrom to the steam-chamber, combined with the main heater comprising the closed steam jacket or chamber '2', the Water-chamber 02, contained concentrically and entirely Within it, the open-end heating-chamber m, contained Within the Water-chamber, the grooved heads cl (1, through which the chamber m is continued, and the circulating-pipes opening into said heads, substantially as described.

2. In a car-heating apparatus, the heater consisting of the vertical annular waterchamber a and the vertical annular steam or heating chamber 2', parallel to and surrounding it and attached at its lower end to the head (I, the annularly-grooved heads 01 (l', which form the ends of the chamber 11, and the diaphragm f, closing the upper end of the chamber 1', substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JOHN B. PORTER.

Witnesses:

BERNICE J. bTOYES, F. L. EMERY. 

